What is the average level for a key stage 3 sats paper?

If you get a level 3-4 then you are under- achieving

If you get a level 5 (ideally a high one) then you are average and on track for a C at GCSE.

If you get a level 6 then you are a bit higher than average and on track for a C or B at GCSE.

If you get a level 7 then you are a lot higher than average and on track for an A or B (even perhaps an A* if you work hard).

If you get a level 8 then you are doing exceptionally well and you would be on track for an A* at GCSE level.

Hope this helped :)